|Unit level:||Level 6|
|Teaching period(s):||Semester 2|
|Offered by||School of Computer Science|
|Available as a free choice unit?:||Y
This course unit aims to provide students with an understanding of principles, issues, techniques and solutions connected with text mining, and to enable them to gain knowledge of how recent advances in text mining relate to innovative approaches to organising, characterising, finding and exploiting large scale textual information in the search for new knowledge.
OverviewText mining has evolved in recent years as a way of mitigating information overload and information overlook, and of helping us discover new knowledge from old. To do this, it employs a battery of techniques from information retrieval, natural language processing and data mining. Although the holy grail of text mining is the discovery of previously unsuspected knowledge, text mining techniques find application in a wide number of areas, to do essentially with the organising, selecting, filtering, combining, association and exploitation of information. Text mining goes far beyond conventional search engine technology.
Teaching and learning methods
20 hours of lectures.
20 hours of labs.
Learning outcomes are detailed on the COMP61332 course unit syllabus page on the School of Computer Science's website for current students.
- Analytical skills
- Problem solving
- Written exam - 50%
- Written assignment (inc essay) - 50%
Introduction: background, motivation, dealing with information overload and information overlook, unstructured vs. (semi-)structured data, evolving information needs and knowledge management issues, enhancing user experience of information provision and seeking, the business case for text mining.
The text mining pipeline: information retrieval, information extraction and data mining.
Fundamentals of natural language processing: linguistic foundations, levels of linguistic analysis.
Approaches to text mining: rule-based vs. machine learning based vs. hybrid; generic vs. domain specific; domain adaptation.
Dealing with real text: text types, document formats and conversion, character encodings, markup, low-level processes (sentence splitting, tokenisation, part of speech tagging, chunking).
Information extraction: term extraction, named entity recognition, relation extraction, fact and event extraction; partial analysis vs. full analysis.
Data mining and visualisation of results from text mining.
Evaluation of text mining systems: evaluation measures, role of evaluation challenges, usability evaluation, the U-Compare initiative.
Resources for text mining: annotated corpora, computational lexica, ontologies, computational grammars; design, construction and use issues.
Issues in large scale processing of text: distributed text mining, scalable text mining systems.
A sampler of text mining applications and services; case studies.
COMP61332 reading list can be found on the School of Computer Science website for current students.
Feedback methodsOral feedback in class.
Course Web site.
- Assessment written exam - 2 hours
- Lectures - 20 hours
- Practical classes & workshops - 20 hours
- Independent study hours - 67 hours